The most expensive luxury complex on the mainland has yet to attract a single buyer. But nine months after opening it in Shanghai, developer Tomson Group has no intention of slashing prices, reported Hong Kong's The Standard. One of the 220 units in the Tomson Riviera complex on the banks of the Huangpu river is priced at US$20 million. To bring in some income, Tomson has decided to rent out flats in one of the development's four towers early next year. Still, Roger Feng, manager of the Riviera says the market is there. "We only have to wait.'